Midnight Navy Blue - ECWCS Generation III Underwear Zip-Collar Shirt Size:2X-Large or while hiking on the

or while hiking on the trails

cleaning cloth

Heavyweight polyfiber insulation for winter warmth

and 1 nylon

The 7 inner strands are made of 2 ply nylon

Midnight Navy Blue - ECWCS Generation III Underwear Zip-Collar Shirt Size:2X-Large or while hiking on theOur ECWCS Gen III Mid Weight Underwear Top (Level II) is the perfect base layer for extreme cold weather. Part of the Extended Cold Weather Clothing System (ECWCS), the cold weather top is designed to keep active duty personnel warm and comfortable all day. Made from a breathable, moisture wicking grid fleece material that's ideal for layering, so it won't get too hot or impede your movement. The zip collar allows the undershirt to be worn as a turtle